Print help when osc-batch-submit is run without parameters

Reviewed-on: #2

README.md

@@ -1,7 +1,7 @@
 # osc-batch-submit
 
 Tool to batch submit requests with osc. This helps when submitting large software stacks from one OBS project to another.
-For example, KDE Frameworks + Plasma + Applications consist on ~500 packages and Qt6 has ~30 packages.
+For example, KDE Frameworks + Plasma + Applications consists of ~500 packages and Qt6 has ~30 packages.
 
 # Installation
 
@@ -23,7 +23,7 @@ osc-batch-submit copypac qt6-from-Factory-to-home-prj.conf
 
 That creates a shell script file with all the osc commands you need.
 
-You should then review the commands (specially if osc-batch-submit tells you to check some message logs, more on this below) and once they're ok, just run this script.
+You should then review the commands (especially if osc-batch-submit tells you to check some message logs, more on this below) and once they're ok, just run this script.
 
 # Reviewing the shell script
 

osc_batch_submit/list_srs.py

@@ -72,7 +72,7 @@ def process_log(filename, show_packagelist=False, show_state=False,
 
 
 def main():
-    parser = ArgumentParser(description='Manage your music collection',
+    parser = ArgumentParser(description='List generated Submit Requests',
                             formatter_class=RawTextHelpFormatter)
     parser.add_argument('--version', action='version',
                         version='list-srs ' + __version__)

osc_batch_submit/main.py

@@ -48,7 +48,7 @@ class OSCBatchSubmit:
 
     def parse_command_line(self):
         main_parser = ArgumentParser(
-            description='Manage your music collection',
+            description='Manage Batch Submissions',
             formatter_class=RawTextHelpFormatter)
         main_parser.add_argument('--version', action='version',
                                  version='osc-batch-submit ' + __version__)
@@ -96,6 +96,10 @@ remove-cache
 
         options = main_parser.parse_args()
 
+        if not options.command:
+            main_parser.print_help()
+            sys.exit(1)
+
         self.command = options.command
 
         if getattr(options, 'config_file', None):